RE: Is this a good engine to use.
I just posted the same engine to your other thread. I have two magnums (th .46 XLS 2 stroke, and the .52 XL 4S) and I love both of them. The .46 is the only one in a plane so far, but it has a ton of power. People will tell you that they may take a little while to break in, compared to an OS, but the dependability after that is great.
Curtis